<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>404 Not Found</title>
    <style>
        .main {
            width: 550px;
            height: 250px;
            margin: 100px auto;
        }

        .err {
            font-size: 200px;
            color: #f00;
            margin-left: -17px;
        }

        .pnf {
            font-size: 50px;
            color: #333;
        }

    </style>
</head>
<body>
<div class="main">
    <div class="err">Error</div>
    <div class="pnf">404 - Page Not Found</div>
</div>
</body>
</html>